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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Distribution Switches, Load Drivers

STMicroelectronics VNQ7140AJTR

Name: VNQ7140AJTR
Brand: STMicroelectronics
SKU: VNQ7140AJTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VNQ7140AJTR

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: 16-PowerLFSOP (0.154", 3.90mm Width)

Datasheet:: VNQ7140AJTR.pdf

Description:: IC PWR DRVR N-CHAN 1:1 PWRSSO16

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Product details

Overview

VNQ7140AJ from STMicroelectronics is a quad-channel automotive smart high-side driver in PowerSSO-16 package, delivering 140 mΩ typical on-state resistance per channel, 12 A current limitation, and MultiSense analog feedback for load current, VCC, and chip temperature. It operates from 4–28 V supply, supports 3 V/5 V CMOS inputs, and drives grounded resistive/inductive/capacitive loads including R10W and LED rear lamps.

For engineers reviewing the VNQ7140AJ datasheet, VNQ7140AJ pinout, VNQ7140AJ application, or VNQ7140AJ equivalent, this device is selected for automotive power distribution modules requiring integrated diagnostics, latch-off fault recovery via FaultRST, and low 0.5 µA standby current in module sleep modes.

Technical Context

The VNQ7140AJ integrates four independent VIPower® high-side switches with active thermal management, configurable latch-off on overtemperature or power limitation, and undervoltage shutdown at 4 V with 0.3 V hysteresis. Each channel features internal current limitation (12 A typ), reverse-battery protection support (with external diode), and ESD robustness (4 kV HBM on inputs).

Its MultiSense architecture multiplexes three diagnostic signals-proportional load current (±5% accuracy), VCC supply voltage, and TCHIP temperature-onto a single analog output pin using SEL0–SEL2 address lines and SEn enable control. FaultRST provides active-low latching reset or auto-restart mode selection.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC operating range	4–28 V DC: compatible with 12 V automotive battery systems under cold-crank (4 V) and load-dump (28 V) conditions.
R_ON (typ)	140 mΩ @ 1 A, 25°C: enables <1.4 W conduction loss per channel at 1 A, reducing thermal stress in compact PCB layouts.
I_LIMH (typ)	12 A: limits peak short-circuit current to protect wiring harnesses and upstream fuses during ground faults.
I_STBY (max)	0.5 µA @ 13 V, 25°C: ensures negligible battery drain during vehicle off-state, critical for always-on modules.
MultiSense resolution	Proportional current mirror with ±5% full-scale accuracy: enables precise real-time load monitoring without external shunt resistors.
FaultRST function	Active-low pin enabling either latch-off (default) or auto-restart behavior: allows system-level fault recovery strategy selection.
ESD rating	4 kV HBM on INPUT/OUTPUT pins: meets ISO 16750-2 transient immunity requirements for under-hood ECUs.

Pinout & Package

Package: PowerSSO-16 (exposed thermal pad connected to VCC), surface-mount, RoHS-compliant, qualified per AEC-Q100 Grade 0 (−40°C to +150°C junction).

Pin/Terminal	Circuit Role	Design Meaning
VCC	Battery supply input	Primary power rail connection; exposed thermal pad tied to VCC for enhanced heat dissipation and EMC grounding.
GND	Ground reference	Must be protected against reverse battery via external diode/resistor network per datasheet Figure 41.
OUTPUT0–3	High-side switched outputs	Four independent source terminals driving grounded loads; each includes integrated current limiting and thermal shutdown.
INPUT0–3	CMOS-compatible control inputs	Hysteresis-enabled 3 V/5 V logic interface; no external pull-up required; compatible with microcontroller GPIOs.
MultiSense	Multiplexed analog diagnostic output	Single-pin delivery of load current (I_OUT), VCC, or T_CHIP; requires external ADC and timing control via SEL lines.
SEn	Sense enable	Active-high signal disabling MultiSense during standby to reduce system leakage and enable shared sense resistor topologies.
SEL0–2	Multiplexer address lines	3-bit binary selection (0–7) to choose among 3 diagnostic channels and 4 fault flags; decoded internally.
FaultRST	Fault reset/latch control	Active-low input: held high for latch-off behavior; pulsed low to clear faults; held low for auto-restart mode.

Key Features

Feature	Design Value
Quad-channel VIPower® high-side switching	Four fully independent channels with individual current limiting, thermal shutdown, and open-load detection-no cross-talk or shared failure modes.
MultiSense analog feedback	Single-pin multiplexed sensing of load current (±5% accuracy), VCC, and chip temperature-eliminates need for discrete sense resistors and voltage dividers.
Configurable fault latch-off	FaultRST pin selects between persistent latch-off (safe default) or auto-restart mode-enables adaptive fault response without MCU intervention.
Ultra-low standby current	0.5 µA max at 25°C: meets OEM requirements for body control modules that remain powered during vehicle sleep cycles.
Reverse battery protection ready	Supports external GND-line diode/resistor network (Figure 41): enables robust operation in vehicles with unregulated battery connections.

Applications

Automotive Signal Lamps

Body Control Modules (BCM)

Use Scenario: Driving LED and filament-based rear combination lamps (R10W, P21W) with PWM dimming and diagnostics.

IC Role / Device Role / Timing Role: High-side switch providing controlled 12 V sourcing, current-limiting during bulb hot-swap, and real-time current feedback for open-circuit detection.

Use Value: Enables automatic lamp-out reporting and eliminates need for separate current-sense ICs or relays in lamp control units.

Use Scenario: Managing power distribution to door locks, window lifts, and interior lighting in centralized BCM architectures.

IC Role / Device Role / Timing Role: Smart power switch with integrated diagnostics, supporting wake-on-event functionality and low-power sleep states.

Use Value: Reduces BOM count by consolidating protection, sensing, and switching into one AEC-Q100-qualified device per load.

Engine Bay Sensors & Actuators

ADAS Power Distribution

Use Scenario: Supplying power to solenoids, fuel injectors, and HVAC actuators exposed to high ambient temperatures (>105°C).

IC Role / Device Role / Timing Role: High-temperature-rated high-side driver with thermal shutdown at 150°C junction and self-limiting fast transients.

Use Value: Maintains safe operation under hood thermal stress while providing accurate current feedback for actuator health monitoring.

Use Scenario: Powering radar modules, camera ECU fans, and sensor heaters in ADAS domain controllers requiring fault containment.

IC Role / Device Role / Timing Role: Isolated load switch with latch-off fault response and MultiSense diagnostics for system-level functional safety compliance.

Use Value: Supports ASIL-B decomposition by enabling independent channel monitoring and fail-safe shutdown without software dependency.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel high-side driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE7234SE	4-channel, 120 mΩ R_ON, but lacks MultiSense analog feedback; uses digital SPI for diagnostics.	Requires external SPI host controller and additional level-shifting; no analog VCC/temperature sensing capability.	Select when digital bus integration is preferred and analog multiplexing adds complexity to the MCU firmware stack.
BD3903FV-M	Quad high-side with 180 mΩ R_ON, 8 A current limit, and basic fault flag only-no analog sensing or latch-off configuration.	No multi-function diagnostic pin; limited to ON/OFF status and overcurrent flag; no thermal or supply voltage feedback.	Select for cost-sensitive non-diagnostic applications where only basic switching and fault indication are required.

Compared with TLE7234SE and BD3903FV-M, the VNQ7140AJ uniquely delivers analog MultiSense feedback on a single pin with configurable latch-off, enabling higher diagnostic fidelity and lower system-level component count in automotive power distribution designs.

Availability

VNQ7140AJ is available at Aetrix Electronics and suitable for automotive signal lamps, body control modules, engine bay actuators, and ADAS power distribution requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for VNQ7140AJ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive-grade power ICs, microcontrollers, and sensors with AEC-Q100 qualification infrastructure.

The VNQ7140AJ belongs to ST's VIPower® M0-7 family of smart power switches, designed specifically for automotive power distribution units needing integrated protection, diagnostics, and ultra-low standby consumption.

FAQ

What is the maximum transient voltage the VNQ7140AJ can withstand?

The VNQ7140AJ supports up to 40 V transient supply voltage per ISO 16750-2 Test B (clamped), with internal overvoltage clamp activating at 38–46 V depending on junction temperature. This protects against load-dump events without requiring external TVS diodes in most 12 V automotive applications.

How does the MultiSense pin deliver three different measurements on one output?

The MultiSense pin outputs a proportional current whose magnitude encodes load current, VCC, or chip temperature based on SEL0–SEL2 address bits and SEn activation. Internal analog multiplexing routes the selected signal to the pin; timing diagrams in Figures 7–8 define sampling windows for accurate ADC capture.

Can the VNQ7140AJ drive inductive loads like fuel injectors safely?

Yes-the device includes demagnetization energy handling up to 10 mJ (VCC = 16 V), integrated negative voltage clamp, and fast thermal transient limiting. When used with recommended snubber networks per Section 5 and Figure 35, it safely commutates inductive loads without external freewheeling diodes.

Is reverse battery protection built-in or external?

Reverse battery protection is not fully integrated; the VNQ7140AJ requires an external diode (DGND) or resistor network in the GND line per Figure 41 and Section 4.1. This design allows flexible implementation based on system-level fault tolerance requirements and power loss budgets.

VNQ7140AJTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 16-PowerLFSOP (0.154", 3.90mm Width)

Series:: VIPower™

Packaging:: Tape & Reel (TR)

Product Status:: Active

Switch Type:: General Purpose

Number of Outputs:: 4

Ratio - Input:Output:: 1:1

Output Configuration:: High Side

Output Type:: N-Channel

Interface:: On/Off

Voltage - Load:: 4V ~ 28V

Voltage - Supply (Vcc/Vdd):: Not Required

Current - Output (Max):: 8A

Rds On (Typ):: 140mOhm

Input Type:: Non-Inverting

Features:: Auto Restart, Status Flag

Fault Protection:: Current Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage, UVLO

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSSO-16

VNQ7140AJTR FAQ

1.How can I place an order for VNQ7140AJTR through Aetrix?

Please submit a Request for Quotation (RFQ) for VNQ7140AJTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for VNQ7140AJTR reliable?

The price and inventory of VNQ7140AJTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNQ7140AJTR is usually 5 days.

3.What payment methods are accepted for VNQ7140AJTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNQ7140AJTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VNQ7140AJTR?

VNQ7140AJTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VNQ7140AJTR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for VNQ7140AJTR?

For technical support, including VNQ7140AJTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNQ7140AJTR requirements.

6.How does Aetrix verify that VNQ7140AJTR is sourced from the original manufacturer or authorized distributors?

All VNQ7140AJTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VNQ7140AJTR meets industry standards.

7.What is the process for return or replacement of VNQ7140AJTR?

All VNQ7140AJTR units undergo pre-shipment inspection (PSI). If there is an issue with VNQ7140AJTR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The VNQ7140AJTR part is unused and in its original packaging.

Return procedure for VNQ7140AJTR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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